摘要
以落叶松为研究对象,以10种有机氯农药（OCPs）为目标物,通过对气流式微注射器萃取技术（GP-MSE）和传统方法（索氏提取和硅藻土柱层析净化）进行比较,利用气相色谱质谱技术进行分离检测,评价了GP-MSE用于直接萃取松针样品中OCPs的准确性,并通过定量离子色谱图初步探讨了目标物的分离效果和基质影响.结果表明：GP-MSE方法分析松针中10种OCPs的加标回收率为70.27%-92.47%（4次平均值）,相对标准偏差为3.21%-22.67%（4次平均值）,与传统方法相比,有相当的回收率和重复性;定量离子色谱图分析表明,经GP-MSE萃取的松针加标样品中各OCPs的分离效果好,基质干扰少.
The study,involving 10 organochlorine pesticides（OCPs） determined by GC-MS in larix gmelinii,evaluated the accuracy of gas purge microsyringe extracting directly of OCPs from pine needle by comparing gas purge microsyringe extraction with traditional method（Soxhlet extraction and Florisil column clean-up）,and discussed simply the separation and matrix effect of targets by the quantification ion chromatograms.The results showed recoveries of OCPs in pine needle samples with GP-MSE were 70.27%-92.47%（n=4）,and relative standard deviations（RSD） were 3.21%-22.67%（n=4）.The results were comparable to those obtained by traditional method.In addition,targets were separated efficiently,and matrix interferences were little according with the quantification ion chromatograms of OCPs in pine needle samples.
出处
《延边大学学报（自然科学版）》
CAS
2011年第2期136-139,共4页
Journal of Yanbian University（Natural Science Edition）
基金
吉林省科技发展计划重点项目(20100340)
